Central London · Data-driven diagnostics
Fertility Signal turns complex laboratory results into a single, clear score - with a protocol that tells you exactly what to do next.
The Fertility Signal Score
We turn your laboratory results into a single, easy-to-read score out of 100. It's built from five clinically meaningful signals - so instead of pages of numbers, you get one clear picture of where you stand and what to do next.
The five signals we measure
What your score means
Your results sit in a healthy range. Focus on maintaining your current lifestyle and revisit periodically to keep track.
Some signals need attention. A targeted protocol and a retest in 8–12 weeks can often move your score up meaningfully.
A clinical review is worth booking. Our team will walk you through the specific signals affecting your score and the next steps available.
Why testing, why now
Many men only consider testing after several months of trying to conceive without success. Sperm quality, DNA integrity and hormone levels can shift over time - often with no noticeable signs along the way.
A single test gives you a clear baseline. Testing again later shows the trend - and a trend is what actually helps you and your clinician decide on next steps.
What we analyse
Count, motility and morphology under microscopic review, benchmarked against WHO reference values Standard ranges published by the World Health Organization, used to interpret whether semen parameters fall within a typical fertile range. Learn more → .
Detects damage that a standard semen analysis misses - a leading cause of unexplained infertility.
TestosteroneThe primary male sex hormone, involved in sperm production and libido.Learn more →, FSHFollicle-Stimulating Hormone - signals the testes to produce sperm.Learn more →, LHLuteinizing Hormone - triggers testosterone production.Learn more →, prolactinA hormone that, at elevated levels, can suppress testosterone and sperm production.Learn more →, oestradiolA form of oestrogen present in men in small amounts; imbalance can affect sperm quality.Learn more → - the endocrine picture behind sperm production.
Metabolic and inflammatory markers that quietly shape reproductive outcomes.
How it works
Book online in under two minutes, or call the clinic directly. Same-day and early-morning appointments are usually available, and the whole visit is designed to be quick, private and unhurried.
Book your visit →You'll have a private, comfortable room on-site. The full visit - your sample plus a short blood draw for the hormone panel - usually takes around 30 minutes from arrival to leaving.
Your semen sample, DNA fragmentation panel and hormone bloods are processed by our lab and reviewed by a clinician. You'll get an email once your private dashboard is ready - usually within 3–5 working days.
Based on which of the five signals came back low, you'll get a tailored next step - lifestyle changes, supplements, or a referral for further clinical care. Most protocols suggest retesting in 8–12 weeks to track progress.
Serving Central London & beyond
Our clinic is on Baker Street. Patients travel from across London, the Home Counties, and further.
Common questions
Any man aged 25 or over who is planning children in the next few years, any couple that has been trying for six months or more, and anyone preparing for IVF or considering egg or sperm freezing.
Semen and hormone results are usually ready within 3–5 working days. DNA fragmentation can take up to 10 days depending on the panel.
Scores above 80 sit in the strong range, 60–79 is borderline, and below 60 typically means a clinical review is worth booking. Your dashboard explains what each individual signal contributes.
Fertility Signal is a private service run by the Marylebone Diagnostic Centre. Same-day booking is usually available and results are delivered through a private patient portal.
No. You can book directly. If your result suggests further investigation, our clinician will explain the next steps clearly.
Book your Fertility Signal test at 73 Baker Street, or call the clinic directly.